Loom shuttle



Patented Mar. 17, 1942 LOM SHUTTLE John J. Kaufmann, Jr., Greenville, S. C., assigner to Steel Heddle Manufacturing Co., Philadelphia, Pa., acorporation of Pennsylvania Application June 24, 1940, Serial No. 342,014

' 4 Claims.

rlhis invention relates to loom shuttles, and it relates more particularly to improved means, in

such shuttles, for holding the bob-bin against longitudinal displacementl on the spindle.

Heretofore various means have been suggested for preventing undesired movement of the'bobbin on the spindle, but none of these have proved entirely satisfactory.

The principal object of the present invention is to provide, in av loom shuttle, simple, eiicient and inexpensive :means for holding the bobbin against longitudinal movement on the spindle after the bobbin has been placed on thespindle, and when it is in its operative position;

A further object of the invention is to provide a device of the character aforesaid which will permit the ready placing and removal of the bobbin with respect to the spindle, without likelihood of damage to any of the parts.

A further object of the invention is to provide a device of the character aforesaid which will readily accommodate itself to slight variations in size and location of the bobbin, and which will serve to reduce wear on the parts to a The nature and characteristic features of the invention will be more readily understood from the following description, taken in connection with the accompanying drawing forming part hereof, in which:

Figure 1 is a top or plan View of a loom shuttle provided with a bobbin holding device embodying the main features of the present invention;

Fig. 2 is a longitudinal sectional view thereof, With the spindle and bobbin in the raised or dofng position;

Fig. 3 is a tranverse sectional view taken on the line 3--3 of Fig. l;

Fig. 4 is a similar section taken on the line 4 4 of Fig. 1; and

Fig. 5 is a perspective View of the bobbin holding member detached from kthe shuttle.

It should, of course, be understood that the description and drawing herein are illustrative merely, and that various changes and modifications may be made in the structure disclosed without departing from the spirit of the invention.

Referring to the drawing, I0 is a shuttle body of a usual type, provided with a spindle opening II, and having a spindle I2, the heel I3 of which is pivotally supported by a -bolt or pin I4. The heel I3 of the spindle I2 is provided with the usual flat side I5, and projection I6, adapted to be engaged by one end of a plate spring I1, which serves to retain the spindle I2 either lin'its nor-l mal axial position within the shuttle I0, or in its upturned or doifingposition as Vshown in Fig. 2 of the drawing. The plate spring I1 is secured in place in the 'shuttle I0 by meansl of the usual bolt or screw I8.

The bobbin I9 is adapted to be positioned upon, or removed from, the spindle I2 in the usual manner. I'he bobbin I9 is usually formed of a relatively light material, such as paper or the like, and preferably is provided at its rear end with a thin metal ferrule 20 terminating in a ilange v2I.

The bobbin holding member 22, illustrated in detached perspective in Fig. 5 of the drawing, is preferablymade of rubber or other similar resilient material, and it is suitably positioned within the shuttle body IIJ so that it may properly function in the manner to be hereinafter set forth.

The bobbin holding member 22 preferably comprises a block having a channel 23 at its front, through which channel 23 the ferrule portion of the bobbin I9 extends, when the spindle and bobbin are in their operative positions within the shuttle body IU.

To the rear of the channelled front portion of l the member 22, there is provided an internal vertical recess 24, on each side and at the bottom, which recess 24 is adapted to receive the iiange 2I of the ferrule portion oi' the bobbin I9. y

The recess 24 is flared at the top, as at 25, to facilitate the insertion of the flange portion 2I of the bobbin I9 in said recess 24.

At the rear of the block 22 there is also provided a channel 26 through Which the heel I3 of the spindle I2 extends, and in which it is seated when the spindle I2 is in the operative position within the shuttle body.

The resilient block member 22 is preferably mounted in horizontal recesses 21 in the side Walls of the shuttle body, which recesses 21 extend inwardly from the spindle opening Il.

A transverse pin 28 extends through the shuttle body and through an aperture 29 in the block member 22. The pin 28 serves tomaintain the block member 22 in its proper position within the recesses 21.

The operation of placing the wound bobbin on the spindle, or removing the empty bobbin therefrom, is precisely the same as in the ordinary form of shuttle which is not provided with the present form of holding device.

It will be noted that the holding device constructed and arranged as hereinabove set forth,

will readily accommodate itself to slight inequalities of size and location of the ilanged end oi the bobbin, and Wear on the parts Will be reduced to a minimum.

Furthermore, the use of a resilient material, such as rubber, for the holding device, serves to dampen undesired vibration of the spindle and its associated parts, thereby also assisting in eliminating wear on such parts.

The Wear on the block member 22 being practically nil, the proper axial alinement of the spindle, in its operative position, may thereby be maintained over a long period of use.

I claim:

1. In a loom shuttle having a pivotally mounted spindle member for supporting a bobbin in normal operating position Within the shuttle and which may be moved to dofiing position relative thereto, the means for holding the bobbin against longitudinal movement on the spindle comprising a block member mounted in the shuttle body, said block member being made of resilient material and having an internal recess flaring at the top and adapted to receive the flange of the bobbin, said block also having a channel in its front portion through which the bobbin extends anda channel in its rear portion through which the heel of thespindle extends.

2. In a loom shuttle having a pivotally mounted `spindle member for supporting' a bobbin in norlmal operating position within the shuttle and Which may be moved to doing position relative thereto, the means for holding the bobbin against longitudinal movement on the spindle comprising a block member made of resilient material and having an internal recess adapted to receive the flange of the bobbin, said block also having a channel in its front portion through which the bobbin extends and a channel in its rear portion through which the heel of the spindle extends, and means for maintaining said block member in xed position in the shuttle body.

3. In a loom shuttle having a pivotally mounted spindle member for supporting a bobbin in normal operating position Within the shuttle and which may be moved to doing position relative thereto, the means for holding the bobbin against longitudinal movement on the spindle comprising a block member made of resilient material and having an internal recess :daring at the top and adapted to receive the flange of the bobbin, said block also having a channel in its front portion through which the bobbin extends and a 'channel in its rear portion through which the heel of the spindle extends, said block member being seated in longitudinal recesses 'in the side Walls of the shuttle body, and a pinextending through the shuttle body and said block member for maintaining said block member in position.

4. In a loom shuttle in which a anged bobbin is supported in normal operative position, the means for holding the bobbin against longitudinal movement Within the shuttle comprising a rubber block member xedly positioned in the shuttle body and having an internal recess in which the ilange of the bobbin is seated in its operative position.

JOHN J. KAUFMANN, JR. 

